【摘要】 本文合成了一些具有Keggin结构的P—V—Mo—W四元杂多阴离子 [PVxMoyW12 x yO4 0 ](3 +x) -的化合物 (其中 ,x =1,2和 3) ,并对其进行红外和拉曼光谱研究 ,可看到化合物的νas(M =Od)、νas(M—Ob—M)和νas(M—Oc—M )的红外伸缩振动峰随着V原子数目的增加而红移 ;而钨原子数目的增加一般使之蓝移 ,但在所研究的PV2 Mo9W和PV3 Mo8W杂多化合物却出现略为反常的情况。分别通过 νas(M=Od)、νas(M -Ob-M )伸缩振动峰峰位 ,可推测含单钒、双钒、三钒杂多化合物的酸性、氧化反应性能的大小。更多还原

【Abstract】 The Multicomponent heteropoly compounds [ Me 4N ] 3+x [ PV x Mo y W 12—x—y O 40 ].n (H 2O) with Keggin structure have been synthesized,and have been characterized by FTIR and NIR FT Raman. The vibrational regularity of oxygen containing bonds (P—O a ,M=O d,M—O b—M and M—O c—M) in these heteropoly compounds have been studied.The vibrational frequencies ν as (M=O d) and ν as (M—O b—M) was shown to prove the reason why the acidity of the heteropoly compounds descended and the oxidization increased by the substitution of V atoms.更多还原